In addition to its regular offering of exhibits, summer night-sky viewings will be held in the Crosby Observatory after 7 p.m. on those evenings. Guests can see moons, planets and other astronomical events with the center’s refractor telescope.

The science center normally opens at 10 a.m. and closes at 5 p.m.

Admission is $19 ($13 for ages 3-11), and it includes films and exhibits, including “Blue Man Group – Making Waves” and “Adventures With Clifford the Big Red Dog.”

The extended-hour offer runs through Aug. 17. For more information, call 407-514-2000 or go to OSC.org.